https://zachary-lili.cfd/ Notes on systems and networks. en https://zachary-lili.cfd/posts/tail-latency.htmlhttps://zachary-lili.cfd/posts/tail-latency.htmlSat, 01 Aug 2026 09:00:00 +0000Why the p99 you read off a dashboard rarely matches what users feel. https://zachary-lili.cfd/posts/bufferbloat.htmlhttps://zachary-lili.cfd/posts/bufferbloat.htmlMon, 01 Jun 2026 09:00:00 +0000A practical look at bufferbloat on small links. https://zachary-lili.cfd/posts/congestion-control.htmlhttps://zachary-lili.cfd/posts/congestion-control.htmlWed, 01 Apr 2026 09:00:00 +0000What BBR and CUBIC are actually doing differently. https://zachary-lili.cfd/posts/fsync.htmlhttps://zachary-lili.cfd/posts/fsync.htmlSun, 01 Feb 2026 09:00:00 +0000Durability, ordering, and the gap between the man page and the hardware. https://zachary-lili.cfd/posts/tls-termination.htmlhttps://zachary-lili.cfd/posts/tls-termination.htmlMon, 01 Dec 2025 09:00:00 +0000Tracing the tradeoffs between terminating at the edge, at the service, or not at all. https://zachary-lili.cfd/posts/backpressure.htmlhttps://zachary-lili.cfd/posts/backpressure.htmlWed, 01 Oct 2025 09:00:00 +0000Most systems pick a backpressure strategy implicitly.